Narrowed my injector firing issue down... I think

[1gcrazy]

So I basically have been working on this turd for a few days on and off. It has spark(after a new Ign Mod), it has compression and fuel to the rail but the injectors aren't firing. None of them. I checked all 4 with a noid light and none of them are firing. I found that the #1 injector has a bad wire but the rest is unexplained. I pulled my CAS out and hear them click when I turn it. I have 12v going to both pins on the injectors with the good wires. Why aren't the rest firing? Is the the only thing left a bad ECU?

 

[Twoslow]

The computers on these 20 year old things are going bad at an alarming rate and they r easy to change. Good time to step up to an EPROM ecu also if u don't have already.

 

[nwBryce89]

i would imagine your ecu is working if you manually spin your cas and your injectors are firing. check your harness all the way up, and pull injectors out make sure they are clean. I just picked up a 91 and the injectors were packed with shart all the way into the rail, i just cleaned them with an aa battery and carb cleaner now it works great, also make sure fuel filter is good and fpr is good.

 

[4wsaddict]

I agree abput the pcm if it gets signal to spark it gets signal to fire the injectors

 

[1gcrazy]

I've already installed a new fuel filter and pressure is good. I just can't think of anything else it could be.